That pretty well covers it as far as I know - but it's not Grizzly that Palomares hits. I think you're thinking of Skyline that goes by Chabot. Palomares is south of Redwood, off 580 east, and goes south to 84, where you can then catch Calaveras.
There's also Wildcat Canyon to Bear Creek, off of the north end of Grizzly Peak.
I've still not figured out the perfect loop, and seem to have to suffer through stop signs, backtrack, or take a freeway at some point. First time from the city I'd probably take 24 through the tunnel, take Fish Ranch road (first exit from the right bore), then go right on Grizzly Peak north (you'll completely avoid the residential bits of Grizzly and Skyline this way). Then right on Wildcat to Bear Creek, and from there you can figure out how to take Reliez Valley eventually to Moraga Road, which then connects to Redwood Road south, and then to Palomares. At the south end of Palomares you could go west to get back to the freeway. That's a nice loop, and would be perfect if not for the stop signs on the Reliez Valley section and the freeway at the end.